Keep at it - SW is way easier to maintain as a lifestyle than Dukan is! I don't get all the hype with it :-/ depressingly constricting menu, no carbs and no fat! Worse than Atkins, at least with Atkins you can enjoy a fry up :king:
My consultant told me that with free foods and healthy extras, you're only eating around 900 calories a day, which is why it's really important to eat your syns. If you're exercising as well, you're supposed to have 10-15 otherwise you're starving yourself and your metabolism slows right down. With 15 syns, you're adding around 300 calories so you're still only at 1200 per day even if you take the full amount.
Also, I've noticed that some people lose way more slowly on EE rather than red or green days, so if you're still maintaining in a month or so, maybe try the red and green days and see if that helps.